XML 82 R67.htm IDEA: XBRL DOCUMENT v3.8.0.1
Income Taxes - Summary of components of income tax expense (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Current income tax expense:    
Federal $ 328 $ 38
State 143 26
Total current tax expense 471 64
Deferred income (benefits) taxes:    
Federal 443 (185)
State (1) 38
Total deferred tax expense (benefit) 442 (147)
Income tax expense (benefit) $ 913 $ (83)